One improvement in this particular experiment could be the use of a new thin metallic spring rather than the old, rusty and weak spring that we used. Another improvement could be using electronic timing equipment and videotaping the movement, which would give us a much more accurate result, since we could actually see in the frames/sec the start of the pulse and the end of it. One last improvement would be to repeat the experiment some more times and also maybe use different size springs.

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The uncertainty of the force, : The uncertainty of the mass is g, then N Therefore, the uncertainty of is N The uncertainty of the extension, : The ruler's uncertainty is cm which is equal to m; which is also the uncertainty of Spring A: The gradient of spring A's graph: )

them with the current services and will be a main toll for answer most of the convincing and vital queries in existing science. [9] Figure 4: Thirty Meter Telescope Extremely Large telescopes: Extremely Large telescopes are thought to be the one of the biggest significances in ground-functioned astronomy.

The diagram below shows two wave pulses moving towards one another. Which one of the following diagrams shows the resultant pulse when the two pulses are superposed? (1) 12. What change, if any, occurs in the wavelength and frequency of a light wave as it crosses a boundary from air into glass?